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  4. One-way rotation of a chemically anchored single molecule-rotor
 
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One-way rotation of a chemically anchored single molecule-rotor

Publikationstyp
Journal Article
Date Issued
2021-10-14
Sprache
English
Author(s)
Eisenhut, Frank  
Kühne, Tim  
Monsalve, Jorge  
Srivastava, Saurabh  
Ryndyk, Dmitry A.  
Cuniberti, Gianaurelio  
Aiboudi, Oumaima  
Lissel, Franziska  
Zobac, Vladimir  
Robles, Roberto  
Lorente, Nicolas  
Joachim, Christian  
Moresco, Francesca  
TORE-URI
http://hdl.handle.net/11420/15085
Journal
Nanoscale  
Volume
13
Issue
38
Start Page
16077
End Page
16083
Citation
Nanoscale 13 (38): 16077-16083 (2021-10-14)
Publisher DOI
10.1039/d1nr04583k
Scopus ID
2-s2.0-85116901749
PubMed ID
34549747
We present the chemical anchoring of a DMBI-P molecule-rotor to the Au(111) surface after a dissociation reaction. At the temperature of 5 K, the anchored rotor shows a sequential unidirectional rotational motion through six defined stations induced by tunneling electrons. A typical voltage pulse of 400 mV applied on a specific location of the molecule causes a unidirectional rotation of 60° with a probability higher than 95%. When the temperature of the substrate increases above 20 K, the anchoring is maintained and the rotation stops being unidirectional and randomly explores the same six stations. Density functional theory simulations confirm the anchoring reaction. Experimentally, the rotation shows a clear threshold at the onset of the C-H stretch manifold, showing that the molecule is first vibrationally excited and later it decays into the rotational degrees of freedom.
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